Formula Lookup
Quick reference for math, physics, chemistry, and statistics formulas. Search and find what you need instantly.
Solves ax^2 + bx + c = 0
Where: a, b, c = coefficients
Relationship in right triangles
Where: a, b = legs, c = hypotenuse
Area of a circle
Where: r = radius
Circumference of a circle
Where: r = radius
Slope of a line
Distance between two points
Midpoint of a line segment
Speed with direction
Where: d = distance, t = time
Rate of change of velocity
Where: v = final, u = initial, t = time
Newton's Second Law
Where: m = mass, a = acceleration
Energy of motion
Where: m = mass, v = velocity
Gravitational potential energy
Where: m = mass, g = gravity, h = height
Rate of doing work
Where: W = work, t = time
Voltage, current, resistance
Where: V = voltage, I = current, R = resistance
Mass per unit volume
Where: m = mass, V = volume
Moles per liter
Where: mol = moles of solute, L = liters of solution
Ideal gas behavior
Where: P = pressure, V = volume, n = moles, R = gas constant, T = temp
Acidity measure
Where: [H+] = hydrogen ion concentration
Average of values
Where: x = values, n = count
Measure of spread
Chance of an event
This is a quick reference guide. For detailed explanations and examples, consult your textbook or teacher.